Universal plug seal, also known as spring energy storage seal, spring actuated seal, PTFE spring seal, etc., is a high-performance seal made of a polytetrafluoroethylene seal ring embedded with a stainless steel spring. Springs are U-shaped, V-shaped, O-shaped, etc. Spring Energized Seals are seals developed for application environments such as high temperature, corrosion, poor lubrication, and low friction, and can meet the increasingly demanding and diverse needs of industrial applications. Such as food industry, medicine, petroleum, chemical machinery and equipment, valves, vacuum pumps, pressure vessels, hydraulic cylinders, aerospace equipment, etc.
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Material Code |
Name |
Main Constituents |
Properties and Applications |
|
PTFE1 |
PTFE |
Virgin PTFE |
Resistant to almost all chemical media; good low-temperature properties; suitable for medium to extreme vacuum applications and moderate pressure loads; ideal for the food, healthcare, and pharmaceutical industries. |
|
PTFE2 |
Filled PTFE |
PTFE + Glass Fiber + Molybdenum Disulfide |
Enhanced compressive strength, extrusion resistance, and lubricity; chemical resistance remains comparable to virgin PTFE. |
|
PTFE3 |
Filled PTFE |
PTFE + Copper Powder |
Improved compressive strength, superior thermal conductivity, excellent wear and friction resistance, and good creep resistance. |
|
PTFE4 |
Filled PTFE |
PTFE + Carbon Fiber |
Good wear resistance under high temperature, high pressure, and high rotational speeds; excellent wear resistance in dry friction, water-lubricated, and water-soluble media; abrasive to soft metals. |
|
PTFE5 |
Filled PTFE |
PTFE + Fillers |
Highly wear-resistant and capable of withstanding high pressure; non-contaminating to the system; used in the food industry. |
|
PTFE6 |
Filled PTFE |
PTFE + Fillers |
High-temperature and wear-resistant; effectively protects mating surfaces; used in the food industry and with soft metals. |
|
UPE |
UHMW-PE |
UHMW-PE |
Wear-resistant with good low-temperature properties; particularly suitable for abrasive media; limited temperature resistance. |
|
PEEK1 |
Aryl ether ketone |
Virgin PEEK |
Suitable for use in hot water and steam up to 250°C; easy to process while maintaining good wear resistance under high pressure and speed; exhibits excellent engineering properties, including high hardness, strength, and rigidity, as well as outstanding creep resistance. |
|
PEEK2 |
Phenylene ether ketone |
Filled PEEK |
Wear-, temperature-, and high-pressure-resistant while retaining a degree of flexibility. |
1. Suitable for reciprocating, rotary (oscillating), and static sealing applications;
2. Compatible with virtually all fluids and chemical media;
3. Excellent sealing performance across high/low pressures and vacuum conditions;
4. Low friction, minimal breakaway resistance, smooth motion, and no stick-slip;
5. Long service life; suitable for oil-free lubrication applications;
6. Wide range of material options to withstand rapid temperature fluctuations and complex operating conditions;
7. No contamination of media when in contact with food or pharmaceutical products;
8. Sterilizable; virtually unlimited shelf life.
